1225results about "Steam generation plants" patented technology

The invention discloses a two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method, and relates to the technical field of energy management and waste heat utilization. The two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method comprises the following steps that S1, thermal parameters and electric power states related to cooperative energy supply are collected, and a thermoelectric cooperative input data set is constructed and preprocessed; s2, the supply and demand difference of the high-temperature steam in the main condensation branch and the ORC branch is recognized; s3, coordinating a photovoltaic power supply structure and a cooperative energy supply sequence, and judging the matching degree of cooperative energy supply to a load; and S4, evaluating a cooling, heating and power cooperation and double-source coupling state in combination with a load matching condition and an output behavior. The problems that in an existing two-phase cold plate liquid cooling structure, high-temperature steam is not recycled, photovoltaic power generation does not participate in linkage energy supply, the power source is single, waste heat waste is serious, and energy collaboration is insufficient are solved.

The invention discloses a thermal power generating unit operation state detection method and system, and relates to the technical field of operation state detection, and the method comprises the steps: S100, building a working condition variable label; s200, carrying out statistics on correlation coefficients of sensors and faults under various working conditions in historical operation data of the thermal power generating unit, dynamically updating weights, and storing the weights in a working condition database; s300, based on the energy transfer chain of the thermal power generating unit, establishing a parameter incidence matrix between devices; according to the method, the data weights of different sensors are adaptively adjusted according to the real-time operation state of the equipment, the defect that the traditional multi-sensor fusion adopts fixed weight or simple weighted average and is difficult to adapt to the working condition change is overcome, a physical relationship network between the equipment is constructed, key associated parameters are identified in an energy transfer form, and the fault identification accuracy is improved. The robustness of anomaly monitoring under complex working conditions is improved, and the false alarm rate is reduced.

The invention provides a comprehensive early warning control method and device suitable for a steam-fused salt heat storage system. The method comprises the steps that the temperature value of a mixed mother pipe temperature arrangement temperature field of a fused salt side outlet of a steam-fused salt heater is obtained so that fused salt can be guided to a fused salt tank; acquiring a temperature value of a molten salt side outlet temperature arrangement temperature field to trigger an associated protection action; according to the real-time temperature data of the fused salt circulation process temperature field, an electric heat tracing device at the corresponding position is started for preheating and condensation prevention; temperature values of the inner wall of the molten salt tank and a molten salt medium in the molten salt tank are obtained to carry out molten salt tank thermal stress early warning; obtaining the temperature value of the temperature of ceramsite at the bottom of the molten salt tank to judge whether the molten salt leaks or not; and the temperature value of the molten salt tank bottom basic temperature is obtained for ventilation control. Based on temperature monitoring and condition analysis, gradient early warning of the safety working condition of the fused salt side of the steam-fused salt heat storage system is effectively achieved, corresponding protection operation can be correspondingly implemented, and safety and stability of the fused salt system can be effectively prevented and guaranteed.

The invention provides an energy gradient utilization steam Rankine cycle power generation system and method for nuclear fusion, and belongs to the field of nuclear fusion energy conversion and utilization. Different temperature heat of a cladding, a divertor and a vacuum chamber is guided into a high-temperature independent heat storage loop, a medium-temperature independent heat storage loop and a low-temperature independent heat storage loop respectively, an operation section stores heat, and a pause section releases heat; feed water is heated step by step through a multi-stage preheater, an evaporator and a superheater according to the sequence of low temperature, medium temperature and high temperature, and superheated steam of 550 DEG C is formed to continuously drive a turbine to generate power. Decoupling of intermittent output of the fusion reactor and continuous operation of the power generation system is achieved, steam extraction of a steam turbine is omitted, the structure is simplified, and the energy utilization rate and the circulation efficiency are improved.

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.

The invention discloses an energy system and method for coupling calcium-based thermochemical heat storage and carbon capture. The energy system comprises a calcination unit, a carbon dioxide pretreatment storage unit, a calcium oxide heat exchange storage unit, a carbonation reaction unit and a heat utilization unit which are arranged based on a boiler. The calcining unit takes green valley electricity as energy to drive calcining reaction to realize heat storage, and generated CaO is processed by the calcium oxide heat exchange storage unit and then is stored for use in a heat release stage; generated COs are stored for standby application after passing through the carbon dioxide pretreatment storage unit; in the heat release stage, CaO and the desulfurized flue gas are subjected to heat release carbonation reaction in the carbonation reaction unit, and heat is released; caCO3 generated by the carbonation reaction can be used for the next heat storage stage; and the heat released by the carbonation reaction is conveyed to the heat utilization unit for heat exchange. Through coupling of calcium-based thermochemical heat storage and carbon capture, green electricity and off-peak electricity are fully utilized, and efficient storage and gradient utilization of energy are achieved.

The invention relates to the technical field of waste heat recovery equipment, in particular to a sintering rotary furnace waste heat composite recovery structure which comprises a rotary furnace body, a boiler body, an energy saver and a flue gas treatment device. The two ends of the economizer are connected with a boiler body flue and the flue gas treatment device respectively, the flue gas treatment device comprises a compression cavity, a piston, a driving device, a water outlet, an exhaust port, a vortex tube and a recovery cavity, the compression cavity is communicated with the economizer through a throat pipe, the piston is located in the compression cavity and forms a moving pair with the compression cavity, and the driving device can drive the piston to move. The water outlet and the exhaust port are communicated with the compression cavity, the recovery cavity surrounds the outside of the compression cavity and is communicated with the hot air outlet of the vortex tube, four-time waste heat recovery is achieved through mutual cooperation of all the components, and the waste heat recovery efficiency is high.

A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof, characterized in that the system comprises a gas turbine power generation system, a power transmission and transformation system, a molten salt heat storage system and a steam power generation system; the gas turbine power generation system is connected with the molten salt heat storage system through a flue gas pipeline; the molten salt heat storage system is connected with the power transmission and transformation system through a cable; the gas turbine power generation system is connected with the power transmission and transformation system through a cable; the molten salt heat storage system is connected with the steam power generation system through a main steam pipeline and a backwater pipeline; and the steam power generation system is connected with the power transmission and transformation system through a cable. The system can realize complete heat-electricity decoupling in a green energy storage system, realize the functions of self-supply of external power, storage of green electricity or heat supply, increase the accommodation capacity of a power grid to green electricity, and enhance the stability, flexibility and safety of a new power system.

The invention relates to the technical field of range hood cleaning, and discloses a steam washing device and a range hood, and the steam washing device comprises a steam generator and a water production module. The steam generator is provided with a steam cavity and a water inlet communicated with the steam cavity, and the steam generator is used for heating the cleaning medium in the steam cavity to generate steam. The water production module is connected with the steam generator, the water production module comprises a refrigeration sheet and a condensation fin, the condensation fin is connected to the refrigeration sheet, and at least part of the condensation fin extends to the water inlet. Wherein the refrigeration sheet is used for providing cooling capacity and conducting the cooling capacity to the condensation fin, and the condensation fin is used for condensing water vapor in air to form condensed water and guiding the condensed water to flow to the water inlet so as to enter the steam cavity to supplement the cleaning medium. According to the technical scheme, automatic water supplementing without a water pump and a water tank can be achieved, condensate water is formed by condensing water vapor in air to supplement the cleaning medium, and continuous operation of the steam washing function is stably guaranteed.

The invention relates to a fused salt heat storage system based on heat energy grading matching. The system comprises a first-stage heat exchange unit, a second-stage heat exchange unit, a third-stage heat exchange unit and a mixing unit, and the first-stage heat exchange unit comprises a first-stage fused salt heat storage loop and a first-stage heat exchange adjusting valve and is used for absorbing and storing high-grade heat of exhaust gas of an exhaust pipeline of a boiler furnace; the second-stage heat exchange unit comprises a second-stage fused salt heat storage loop and a second-stage heat exchange regulating valve and is used for absorbing and storing high-grade heat of main steam extraction of a main steam extraction pipeline of a high-pressure cylinder of the steam turbine; the third-stage heat exchange unit comprises a third-stage fused salt heat storage loop and a third-stage heat exchange regulating valve and is used for absorbing and storing low-grade heat of air exhaust of an intermediate-pressure cylinder of an air exhaust pipeline of the intermediate-pressure cylinder of the steam turbine; the mixing unit mixes the three kinds of exhaust heat and outputs working medium fluid meeting the target temperature so as to adapt to different preset operation working conditions of the thermal power generating unit. Therefore, heat energy can be stored and released in a gradient mode through the system, wide-temperature-range efficient utilization is achieved, and the flexibility and energy efficiency of the thermal power generating unit are improved.

The utility model relates to the technical field of steam turbines, and discloses a thermodynamic system of a coupling back pressure turbine for wide-load peak regulation, which is provided with a boiler, a back pressure turbine, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a generator and a recovery mechanism, the boiler is respectively connected with the back pressure machine, the high-pressure cylinder and the intermediate-pressure cylinder; the back pressure machine is connected with the high-pressure cylinder; the medium-pressure cylinder is connected with the low-pressure cylinder; the low-pressure cylinder is connected with the generator; the recycling mechanism is connected with the low-pressure cylinder and the boiler and used for condensing steam discharged by the low-pressure cylinder and recycling and conveying the steam to the boiler. In a high-load operation state, the thermodynamic system, the back pressure turbine and the high-pressure cylinder operate in parallel, and the boiler conveys steam to the back pressure turbine and the high-pressure cylinder. In the thermodynamic system in a low-load operation state, the back pressure machine and the high-pressure cylinder are connected in series for operation, the boiler conveys steam to the back pressure machine, and the back pressure machine conveys steam to the high-pressure cylinder. According to the utility model, the pressure of steam entering the steam turbine during low-load operation can be improved, and the feed water temperature and the operation economy can be improved.

The application discloses a supplemental combustion type flue gas molten salt heat exchanger and a working mechanism thereof, characterized in that: a supplemental combustion device is added in the upstream of a flue gas molten salt heat exchanger, the supplemental combustion device is connected with the flue gas molten salt heat exchanger through a flue, and a supplemental combustion type flue gas molten salt heat exchange integrated device is formed; the device comprises a supplemental combustion device or a supplemental combustion device, and a first-stage flue gas molten salt heat exchange component. The application can realize the functions of more uniform and efficient supplemental combustion heat transfer in the flue gas, realize a safer ignition mode of the supplemental combustion gas or the mixed body of the atomized supplemental combustion gas and liquid (or gas powder) outside the flue, realize the function of more convenient monitoring of the supplemental combustion, realize the complete decoupling of heat and electricity in the combustion engine power generation heat supply energy storage system, and realize the functions of self-supply of external power, heat storage or heat supply of the system.

The invention discloses a cross-temperature-zone heat storage steam supply system and a working method thereof, and belongs to the technical field of heat storage and supply. According to the system, a first inlet of a hot water storage tank is connected with an outlet of a circulating deoxidizing hot water generating unit, and a first outlet of the hot water storage tank is connected with one end of a pressure reducing throttle valve; an inlet of the molten salt hot storage tank is connected with an outlet of the molten salt cold storage tank, and an outlet of the molten salt hot storage tank is connected with a second inlet of the molten salt heat exchanger; the solid heat storage unit is connected with the solid heat storage electric heater, and an outlet of the solid heat storage unit is connected with a second inlet of the secondary overheating heater; the other end of the pressure reducing throttle valve is connected with a first inlet of the molten salt heat exchanger or the primary superheater, a first outlet of the molten salt heat exchanger or the primary superheater is connected with a first inlet of the secondary superheater, and a first outlet of the secondary superheater is connected with a steam pipe network. Hot water heat storage and vaporization can be integrated, and efficient heat supply in different temperature zones can be achieved.

The invention belongs to the technical field of fused salt energy storage, and particularly relates to a thermal power generating unit deep peak shaving system and method of a fused salt heat storage coupling high-temperature heat pump. In the high-generation time period of renewable energy sources, the load of a thermal power generating unit needs to be reduced, at the moment, a boiler operates at the lowest stable combustion load, a fused salt heat storage system is added, all main steam is extracted to enter the heat storage system to heat fused salt, a high-pressure cylinder of a steam turbine is stopped, and an intermediate-pressure cylinder and a low-pressure cylinder of the steam turbine operate under the low-load working condition; the output load of the unit only meets the plant power, and the load is not output to the power grid; in the load rising time period, heat stored by the fused salt heat storage system is used for generating steam in the unit load rising stage to increase the unit steam turbine load rising rate and peak power generation; the problems of operation safety and low energy grade in the unit peak regulation process are solved. In the peak period of electricity utilization, heat stored in the fused salt heat storage system is released into the unit, and the output load of the unit is rapidly increased. An outlet of the deaerator serves as a water taking point, part of supplied water is extracted to pass through the preheater, the evaporator and the superheater to generate high-temperature and high-pressure steam, the high-temperature and high-pressure steam enters a high-pressure cylinder of the steam turbine to do work, and therefore the output load of the steam turbine is rapidly increased. The invention provides a thermal power generating unit deep peak regulation system and method of a fused salt heat storage coupling high-temperature heat pump, and aims to realize deep peak regulation of a unit and power generation by absorbing renewable energy sources such as wind and light.

The embodiment of the invention provides a multi-steam-source cooperative frequency modulation combined heat and power generation system and a control method. The system comprises a boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a power generator, a multi-stage regenerative heater, a heating system and a heating steam supply pipeline. A main steam outlet of the boiler is connected to the high-pressure cylinder through a main steam pipeline, a steam exhaust port of the high-pressure cylinder is connected to the intermediate-pressure cylinder through a pipeline, a steam exhaust port of the intermediate-pressure cylinder is connected to the low-pressure cylinder through a pipeline, and a steam exhaust port of the low-pressure cylinder is connected to the generator through a pipeline. A condensate water outlet of the medium-pressure cylinder is communicated to a condensate water inlet of the boiler through a first condensate water pipeline; the heating system is communicated with a steam exhaust port of the medium-pressure cylinder through a heating steam supply pipeline; the multi-stage regenerative heater is arranged on the first condensate water pipeline and connected with the high-pressure cylinder and / or the intermediate-pressure cylinder through steam extraction pipelines, and steam extraction adjusting valves are correspondingly arranged on the steam extraction pipeline between the high-pressure cylinder and the multi-stage regenerative heater and / or the steam extraction pipeline between the intermediate-pressure cylinder and the multi-stage regenerative heater.

The invention discloses a coal-to-methanol conversion treatment system and a coal-to-methanol conversion treatment simulation method. The coal-to-methanol conversion treatment system comprises a gas separator, a conversion furnace, a first water separation device, a stripping tower and a second water separation device. Water gas of a gasification section enters a gas separator, and a gas phase discharged from a gas outlet of the gas separator is divided into a first gas phase and a second gas phase through a flow divider; the inlet of the conversion furnace is connected with the flow divider so that the first gas phase flows into the conversion furnace; the first water separation device is used for performing multi-stage separation on the mixed gas; steam entering the stripping tower from the steam inlet is in contact with condensate entering the stripping tower from the first water separation device; and the second water separation device is connected with the gas outlet of the stripping tower to separate the vent gas and the wastewater. Water gas can be effectively treated, so that the energy consumption of the system is reduced, the water-saving and environment-friendly effects are achieved, and the purposes of improving quality and efficiency can be achieved.

The invention relates to a deoxidizing assembly, a steam generator and an air conditioner. The deoxidizing assembly comprises a water inlet pipe, deoxidizing unit bodies and a cover plate, and the deoxidizing unit bodies are installed on the top face of the water inlet pipe in a spaced and communicated mode. The flanging cover plate is connected to the upper part of the water inlet pipe and covers the peripheries of all the deoxidizing unit bodies; each deoxidizing unit body comprises a cap-shaped top cover and a connecting pipe located below the cap-shaped top cover, each deoxidizing unit body is installed above the corresponding water inlet pipe through the connecting pipe, and a liquid blocking ring is installed at the position, close to an outlet of the connecting pipe, of the connecting pipe; in the process that main water flow flowing in through the water inlet pipe upwards flows into the deoxidizing unit body, part of water is jetted from one side of the connecting pipe under the blocking effect of the liquid blocking ring, and the remaining water flow continues to flow upwards, is sprayed into the lower surface of the cap-shaped top cover and falls downwards after being diffused on the surface of the cap-shaped top cover to form a liquid film. The water flow falling downwards meets the jet flow from one side of the connecting pipe, so that the liquid film is further broken.

The invention discloses a multipurpose comprehensive utilization system for flue gas of a garbage incinerator, and relates to the technical field of solid waste treatment and resource recovery. After steam generated by a waste heat boiler drives a generator set, medium-temperature and low-temperature flue gas is sequentially guided into a sludge drying system for heat energy coupling utilization; in the purification section, a synergistic removal process is adopted, and trapped pollutants are converted into ammonium sulfate fertilizer raw materials while acid gas and dioxin are efficiently removed; finally, the fly ash rich in heavy metal is guided into a melting system, and inert building material aggregate is formed through high-temperature vitrification. According to the integrated system, the limitation of traditional quality-divided treatment is broken through, the three targets of deep recovery of flue gas waste heat, collaborative resource conversion of pollutants and safe treatment of fly ash are achieved, the operation cost is greatly reduced, additional economic values are created, and a win-win comprehensive solution of environmental benefits and economic benefits is provided for a waste incineration plant.

Waste heat cascade utilization system for the synergistic recovery of heat energy from heat exchange and milling heat, characterized in that it includes a mechanical heat recovery device, a primary preheating device, a secondary steam generation device and a tertiary low-temperature utilization device; wherein the mechanical heat recovery device connects the heat-generating components of the blower mill to the dry pipe inlet air duct in order to absorb the heat generated by the heat-generating components of the blower mill and transfer it to the dry pipe inlet air duct; wherein the primary preheating device, the secondary steam generating device and the tertiary low-temperature utilization device are arranged sequentially in the flue gas duct at the dry pipe flue gas outlet; wherein the heat outlet of the primary preheating device is connected to the combustion air duct of the boiler in order to preheat the combustion air of the boiler; wherein the steam outlet of the secondary steam generating device is connected to the steam inlet of a steam turbine to assist the turbine in driving a generator for electricity generation; and wherein the tertiary low-temperature utilization device is connected to the process water line to regulate the process water temperature and to assist the plant heating.

MEANS FOR SOLVING THE PROBLEM: To provide an inlet duct system for a heat recovery steam generator.SOLUTION: A system (10) includes an exhaust diffuser system (22) for a heat recovery steam generator (HRSG) (16). The system (10) includes an inlet portion (23), a diffuser portion (24) axially extending from the inlet portion (23), and an outlet portion (26) fluidly coupled to an axial distal end of the diffuser portion (24), where an outlet extent (252) of the outlet portion (26) is greater than an inlet extent (254) of the inlet portion (23). The diffuser portion (24) includes multiple wall portions (272), and the multiple wall portions (272) are incrementally angled relative to an axial extent (258) extending from the inlet portion (23) to the outlet portion (26). The system (10) may further include a gas turbine engine (12) coupled to the inlet portion (23), and the HRSG (16) coupled to the outlet portion (26).SELECTED DRAWING: Figure 2

The invention discloses a non-catalytic and catalytic coupling synthesis gas preparation device and application thereof to synthesis gas preparation, the device comprises a non-catalytic reactor, a catalytic reactor, a pre-catalytic reactor, a waste heat boiler, a plurality of heat exchangers, a connecting pipeline and the like, and the pre-catalytic reactor is also provided with a heat exchanger structure; a pre-catalytic reaction cavity is arranged between a cold end inlet and a hot end outlet of the pre-catalytic reactor; the heat exchanger is used for preheating oxygen and part of raw materials and feeding into the non-catalytic reactor; the rest of the raw materials are preheated again and then fed into the pre-catalytic reactor and the non-catalytic reactor, reactants of the pre-catalytic reactor are fed into the catalytic reactor for continuous reaction, reactants of the catalytic reactor are used for supplying heat to the pre-catalytic reactor, the heat exchanger and the waste heat boiler, and the waste heat boiler can be used for preparing raw material steam; and heat balance adjustment of the whole device can also be participated. The device is high in heat utilization rate and conversion rate, can adjust the hydrogen-carbon ratio of the synthesis gas, and is particularly suitable for preparing methanol synthesis gas from natural gas and the like.

The thermal chemical heat storage and carbon capture system comprises a coal-fired boiler, a calcination reactor and a carbonation reactor, the calcination reactor extracts high-temperature flue gas from the front wall of a hearth of the coal-fired boiler, the high-temperature flue gas drives CaCO3 in the calcination reactor to be decomposed into CaO and CO2, and heat storage is achieved; the reacted flue gas is pumped back into a tail flue of the coal-fired boiler, and the flue gas flow required by the reaction is controlled through a flow control valve on a pumping pipeline; caO generated by the calcination reaction can enter the carbonation reactor in the heat release stage, a heat release carbonation reaction is carried out, heat is released, CaCO3 obtained after the heat release reaction returns to the calcination reactor through a pipeline to serve as a reaction raw material, and CO2 obtained after the heat release reaction is output to a heat supply system. The integration of heat storage, heat release and carbon capture is realized by utilizing calcium-based material circulation, and the peak regulation capacity and the carbon capture economy of the coal-fired unit are remarkably improved.

The invention discloses a thermal deoxygenization device, a steam generator and a heat pump unit. The thermal deoxygenization device comprises an upper cover plate and a lower cover plate, the middle baffle is located below the upper cover plate, and the middle baffle and the upper cover plate are connected in a sealed mode to form a water storage chamber; the bottom plate is provided with dripping holes and located below the middle baffle, a deoxidizing chamber is arranged between the middle baffle and the bottom plate, one end of the deoxidizing chamber is opened to serve as a steam inlet, and the other end of the deoxidizing chamber is opened to serve as a steam outlet; the baffle assembly is located in the deoxidizing chamber, the baffle assembly comprises a plurality of deflection baffles which are sequentially arranged at intervals from the steam inlet to the steam outlet, and a deflection flow channel is formed between every two adjacent deflection baffles; wherein the middle baffle is provided with a plurality of spray heads for spraying water in the water storage chamber to the deoxidizing chamber, and the spray heads are arranged along the baffling flow channel. High-temperature steam is used for heating water to achieve the deoxygenization effect, the installation space is saved, system heat is efficiently utilized, the influence of the environment on the system is reduced, and the maintenance cost is greatly reduced.

This invention discloses a deep peak-shaving system and method for thermal power plants based on ammonia cracking hydrogen production coupled with deep utilization of waste heat. It relates to the field of thermal power generation and includes a gasifier, an ammonia cracking hydrogen production unit, a cooler, a separator, an ammonia storage tank, an ammonia-hydrogen storage system, a peak-shaving burner, and a boiler. This invention utilizes the waste heat of the thermal power boiler to vaporize liquid ammonia into gaseous ammonia. The ammonia cracking hydrogen production unit uses medium- and high-temperature waste heat or electrical energy, along with an ammonia cracking catalyst, to crack a portion of the ammonia gas, producing an ammonia-hydrogen-nitrogen mixture. This mixture is then separated by a separator to obtain an ammonia-hydrogen mixture. The ammonia-hydrogen mixture is mixed with ammonia gas to produce mixtures with different ammonia-hydrogen ratios, which are stored in the ammonia-hydrogen storage tanks. The ammonia-hydrogen ratio used in the burner is adjusted according to different loads to maintain stable combustion. This invention can maintain stable combustion in the burner under low loads, achieving deep peak-shaving of thermal power plants, and can also deeply utilize waste heat from thermal power plants, improving power generation efficiency.

The application relates to the technical field of solar power generation, in particular to a combined cooling, heating and power (CCHP) system. A first heat storage circuit is used for collecting solar energy and storing the solar energy as low-temperature heat energy; a second heat storage circuit is coupled with the first heat storage circuit and is used for converting the low-temperature heat energy into high-temperature heat energy and storing the high-temperature heat energy; a user heat circuit is coupled with the first heat storage circuit and / or the second heat storage circuit and is used for transmitting a heat source to a user heat end; a user cold circuit is coupled with the first heat storage circuit and / or the second heat storage circuit and is used for generating a cold source and transmitting the cold source to a user cold end; and a power generation circuit is coupled with the second heat storage circuit and is used for converting the high-temperature heat energy into electric energy. Through the synergistic integration of multi-stage energy storage, hierarchical heat coupling and multi-end energy output, the application realizes efficient and full-grade cascade utilization of solar energy, significantly reduces heat loss, meets the multiple demands of users for power generation, heat supply and refrigeration, greatly improves the overall energy utilization efficiency of the system and avoids resource waste.

The invention provides a dynamic peak regulation method of a thermal power plant using high-temperature heat energy storage, and belongs to the technical field of dynamic peak regulation of thermal power plants. The current heat storage capacity and the residual heat storage capacity of a heat storage tank are calculated through an intelligent peak regulation decision maker, the optimal steam extraction proportion and the heat storage release strategy are determined based on a dynamic peak regulation game model, and intermediate-stage steam of a steam turbine is extracted to the heat storage tank for heat storage according to the optimal steam extraction proportion in the power grid load valley period. The heat storage tank heat release system is started in the peak load period of the power grid to increase the power generation power to achieve power compensation, the optimal steam extraction proportion is adjusted in real time through an intelligent peak regulation decision maker, and a heat storage efficiency monitoring system is established to monitor the operation state of the heat storage tank in real time and optimize operation parameters. The technical problem that the optimal steam extraction proportion cannot be determined in real time is solved.

The invention discloses a waste heat boiler power generation optimization method for a gas-steam combined generator set, and the method comprises the steps: deeply cooling the exhaust gas temperature to below 75 DEG C through a multi-stage anti-corrosion heat exchange device, and carrying out the heat exchange through an intelligent control heat medium water circulation loop; the recycled heat is distributed to natural gas preheating, refrigeration, heat supply, air preheating and the like according to the priority in a cascade mode. According to the system, efficient deep recovery and comprehensive utilization of flue gas waste heat are achieved, the energy efficiency and economical efficiency of the unit are remarkably improved, and safe and reliable operation of the system is ensured through intelligent anti-corrosion control.

Provided is a control method with which, in a plant combining a GTCC and a CO2 recovery device, it is possible to supply sufficient steam to the CO2 recovery device even during start-up of the GTCC. Specifically provided is a steam supply system for supplying steam generated in a heat recovery steam generator to a CO2 recovery device that recovers CO2 from exhaust gas discharged by a power generation plant, which includes a gas turbine, the heat recovery steam generator, and a steam turbine, wherein medium-pressure steam generated in the heat recovery steam generator is supplied to the CO2 recovery device during start-up of the power generation plant.

The invention discloses a fused salt thermal energy storage regulation and control method and device, electronic equipment and a storage medium. According to the method and device, multiple key data of fused salt in a fused salt storage tank module are collected in real time, and the operation state of a fused salt circulation module is dynamically adjusted based on a power grid peak regulation and frequency modulation request; and when the temperature of the molten salt is too low, the anti-freezing and anti-blocking module is started in time to maintain the flowability of the molten salt, so that the problems that the service life of equipment is shortened and the maintenance frequency is increased due to lack of systematic prediction and control on related problems of molten salt characteristics and thermal stress in an existing molten salt thermal energy storage system can be solved, and the purposes of prolonging the service life of the equipment, reducing the maintenance frequency and reducing the maintenance cost are achieved. And the operation stability of the fused salt heat energy storage system is improved.

The off-peak electricity heat storage cold and hot steam combined supply system comprises an electric boiler and a water supplementing device, the steam output end of the electric boiler is connected with a first heat storage tank, a second heat storage tank and a steam output pipe, and a first valve is installed between the steam inlet end of the first heat storage tank and the steam output end of the electric boiler; a second valve is installed between the steam inlet end of the second heat storage tank and the steam output end of the electric boiler. The system has the beneficial effects that through cooperation of the electric boiler, the first heat storage tank, the second heat storage tank, the steam output pipe and the hot water output pipe, steam can be generated through the electric boiler in the valley electricity period, and the steam is released in the peak electricity period to meet the production requirement; and the first heat storage tank and the second heat storage tank alternately store heat and release steam and hot water, and sustainable production is met, so that the electric energy cost of a factory is effectively reduced, the peak-valley difference of a power grid can be balanced, and the energy utilization rate is increased.